US4689811A - Call diverter function in an early care telephone system - Google Patents
Call diverter function in an early care telephone system Download PDFInfo
- Publication number
- US4689811A US4689811A US06/857,746 US85774686A US4689811A US 4689811 A US4689811 A US 4689811A US 85774686 A US85774686 A US 85774686A US 4689811 A US4689811 A US 4689811A
- Authority
- US
- United States
- Prior art keywords
- duty
- center
- centers
- telephone
- subscriber
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
- 238000000034 method Methods 0.000 claims abstract description 9
- 230000015654 memory Effects 0.000 claims description 25
- 230000005540 biological transmission Effects 0.000 claims description 12
- 230000011664 signaling Effects 0.000 claims description 11
- 230000003213 activating effect Effects 0.000 claims 2
- 238000001514 detection method Methods 0.000 claims 1
- 238000012544 monitoring process Methods 0.000 abstract description 5
- 230000006870 function Effects 0.000 description 13
- 238000010586 diagram Methods 0.000 description 2
- 230000009977 dual effect Effects 0.000 description 1
- 230000006386 memory function Effects 0.000 description 1
- 230000008672 reprogramming Effects 0.000 description 1
Images
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04M—TELEPHONIC COMMUNICATION
- H04M1/00—Substation equipment, e.g. for use by subscribers
- H04M1/006—Call diverting means
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04M—TELEPHONIC COMMUNICATION
- H04M11/00—Telephonic communication systems specially adapted for combination with other electrical systems
- H04M11/04—Telephonic communication systems specially adapted for combination with other electrical systems with alarm systems, e.g. fire, police or burglar alarm systems
Definitions
- the invention relates to a method and apparatus in a telecommunication system in which a number of subscribers have the possibility of connection to one or more centrally situated surveillance centers common to the subscribers.
- the caller is programmed for selecting another predetermined number at the next attempt at calling.
- the call is answered and, via conventional call diverter equipment, is put through by ringing, via another telephone line, the telephone number where the function sought after can be provided.
- the call is answered, and with the aid of a special signal the caller is directed to call up another predetermined telephone number.
- the physical line is re-routed at the telephone exchange.
- the re-routing function is generally known as a diverter function.
- the method and apparatus in accordance with the invention are intended, for example, for implementation in an early care telephone system of the type illustrated in Swedish patent application No. 7801578-1.
- the subscriber equipment of the system is connected to the public telephone network and is programmed to call one or a plurality of telephone numbers related to one or a plurality of duty centers.
- the subscriber equipment operation is initiated with the aid of a built-in press button or with the aid of exterior key functions connected to the equipment.
- the telephone line which is normally connected to the telephone apparatus of the pensioner, is switched to the subscriber equipment with the aid of a switching relay.
- the connection tone is detected and the calling sequence is initiated.
- the latter When the call is answered at the duty center, the latter sends an acknowledgement signal, which stops the caller from monitoring to insure that the call really has been answered by a duty center.
- the acknowledgement signal also initiates the transmission of an identity code from the subscriber equipment so that the person seeking help can be identified at the duty centers. After this, the call function takes over, the duty centers sending voice control signals, for alternatively switching the microphone and loudspeaker in said subscriber equipment to the pensioner.
- the call is answered automically by an automatic telephone answerer or other equipment which can imitate the signal picture required for carrying out the call diverter function.
- a signal is recorded in the automatic telephone answerer, and this signal opens a facility of the subscriber equipment to receive a new telephone number, which is recorded by the telephone answerer in a suitable signal form.
- the telephone number messages can be accompanied by a signal causing the subscriber equipment to disconnect a telephone communication in progress, or this is also achieved by the caller time monitoring facility's disconnecting when the criterion "acknowledgement signal" is not complied with. After a suitable time lag, the calling sequence is started once again.
- Dual Tone Multi Frequency (DTMF) signalling is used in the described system for controlling necessary functions via the telephone line.
- DTMF Dual Tone Multi Frequency
- the invention is not limited to DTMF signalling, and other signalling forms can be envisaged.
- the criterion for these is end-to-end signalling within a speech band wherein such signalling can be transmitted via an established telephone connection.
- the advantages with a call diverter function according to the invention are that the great amount of equipment (the pensioner's equipment) which is envisaged will not need to contain information. Further it does not need to be up-dated with telephone numbers to the duty centers to which so-called night connection is to take place.
- Another advantage is also important from the pont of view of safety. If a duty center is knocked out for some reason (faults, cable breakage, etc.), a telephone answerer can be set up in a public telephone exchange and from there it can re-route the calls to duty center in operation.
- FIGURE is a block diagram of a system including the inventive provisions.
- a plurality of subscribers TA1 - TAn are connected via their associated subscriber equipment SE1 - SEn to given duty centers A, B, C, according to the example, via an exchange EX in the public telephone network.
- duty centers A, B, C are connected via their associated subscriber equipment SE1 - SEn to given duty centers A, B, C, according to the example, via an exchange EX in the public telephone network.
- an exchange EX in the public telephone network.
- a local exhange it is of course also possible, via a local exhange, to bring about a link between subscribers and one or more locally placed duty centers, i.e., and internal telephone system, without utilizing outside lines.
- This envolves a certain limitation, however, since there may be telephone numbers, other than those only going to the duty centers, programmed into the subscriber equipment, e.g., numbers to relations and friends.
- the figure illustrates an example of a configuration where a given number of subscribers is connected to an area duty centers A and a give number are connected to an area duty centers B.
- the centers B is only illustrated for the sake of clarity and is not included in the invention itself.
- a chief duty centers C may receive calls from all subscribers.
- the units of interest for the invention are illustrated in block diagram form within the duty centers and subscriber equipment SE1.
- Duty center A is assumed to be "night-connected" so that all calls to the center A will be re-routed to the chief duty center C.
- night connection equipment NK of the type Ericsson KFB 16901 has been actuated such that a connection has been set up between the equipment NK and telephone answerer equipment ATS.
- From dialing button telephone with DTMF signalling there has previously been recorded on the telephone answerer an opening code corresponding to a digit, e.g. 3, followed by the telephone number to the chief duty center C.
- the subscriber equipment SE1 is programmed to ring the area duty center A, i.e. a code corresponding to the number to the area duty center A is normally stored in a memory in the subscriber equipment.
- the memory is of the type E 2 PROM (Electrical Eraseable Programable Read Only Memory) such as a General Instrument 5901.
- a control unit MCPU which is a microprocessor such as an INTEL 8749, now energizes a connection relay IR and by a holding and transmission unit T, containing normal transformer and amplifier functions towards the line, there is formed a loop to the public exchange EX, which sends the connection tone to the subscriber equipment SE1.
- connection tone is received and detected via the transmission unit T in a connection tone detector TD controlled by the control unit MCPU.
- the control unit reads the programmed-in telephone number of the chief duty center from a permanent number memory FNM, which is a partial area of said E 2 PROM memory, and starts transmission of the number. This can be done with the aid of interruption impulsing via an impulsing unit IE, or, if the telephone network exchange is equipped for DTMF signalling, via a signal transmitter SS of the type MITEL 5089 intended for DTMF signalling.
- FNM permanent number memory
- the exchange EX has received the transmitted telephone number, its selector means are set towards the duty center A.
- the control unit MCPU there is simultaneously started time monitoring for checking that the reply acknowledgement signal is obtained from the duty center within a given time (about 90 seconds).
- the exchange checks that the desired telephone number is unoccupied. If the number is engaged, the engaged tone is sent to the subscriber equipment SE1, which detects this via the transmission unit and the detector TD.
- the control unit breaks the loop to the telephone network exchange via the impulsing unit IE and makes a pause of about 30 seconds, subsequent to which a new attempt at calling is made. If the telephone number is not engaged, the ringing tone is sent to the subscriber equipment and the ringing signal to the area duty center A. Here the call is answered automatically and the telephone answerer is activated and sends out the opening code 3.
- the digit 3 is received in the subscriber equipment via the unit T and a signal receiver SM of the type MITEL 8870, where the digit for the DTMF signalling is decoded and fed into the control unit MCPU which then opens and prepares storage of the coming telephone number in a temporary number memory TNM.
- the recorded telephone number is then sent from the telephone answerer ATS in the area duty center A, i.e. according to the example the number is sent to the chief duty center C, this number being received by the subscriber equipment SE1, the signals being decoded by the unit T and receiver SM, while the received digits are stored in the memory TNM via the control unit, the memory TNM being a RAM memory.
- the code from the telephone answerer it is also possible to include a terminal portion which is a signal telling the subscriber equipment that no acknowledgement signal is coming. The subscriber equipment can then disconnect the connection immediately without waiting for time triggering.
- the control unit MCPU monitors a pause of about 30 seconds, after which the loop to the exchange is closed once again via the impulsing unit IE.
- the connection tone is detected conventionally by the transmission unit T and the detector TD and is checked by the control unit.
- the control unit reads the stored telephone number from temporary number memory TNM, and starts transmission of the number, either via the impulsing unit IE (interruption impulsing) or via the signal transmitter SS (DTMF signalling), depending on the application.
- the exchange EX When the exchange EX has received the transmitted telephone number, its selector means are set to the chief duty center C. If the number is disengaged, the call signal is sent from the exchange to the center C and the ringing tone is sent to the subscriber equipment SE1. When the call is answered an acknowledgement signal, a code corresponding to the digit 4, for example, is sent from the chief duty center C to the subscriber equipment. The digit is received via the transmission unit T, and the receiver SM, and is decoded and fed into the control unit MCPU, thus disabling its time monitoring facility.
- the control unit reads information from an identity memory IDM, and starts the transmission via the signal transmitter SS and transmission unit T of an identity number already programmed into the memory to the chief duty center C, where it is received and detected by answering equipment SVU, in the form of a multi-line telephone, which also illuminates a sign indicator for identifying the calling subscriber. Conversation can than be started.
- the memory IDM also constitutes a partial area of the memory E 2 PROM. As will be seen, several memory functions are collected in a memory E 2 PROM, but for the sake of simplicity and clarity, they are depicted as individual units in the described embodiment, which is naturally also possible.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
SE8404667A SE444880B (sv) | 1984-09-17 | 1984-09-17 | Sett for att i ett telekommunikationssystem vid anrop till nattkopplad jourcentral eller jourcentral ur drift astadkomma automatisk omkoppling till en annan jourcentral och anordning for genomforande av settet |
SE8404667 | 1984-09-17 |
Publications (1)
Publication Number | Publication Date |
---|---|
US4689811A true US4689811A (en) | 1987-08-25 |
Family
ID=20357046
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US06/857,746 Expired - Fee Related US4689811A (en) | 1984-09-17 | 1985-09-17 | Call diverter function in an early care telephone system |
Country Status (10)
Country | Link |
---|---|
US (1) | US4689811A (fi) |
AU (1) | AU4864485A (fi) |
DE (1) | DE3590468T1 (fi) |
DK (1) | DK229286D0 (fi) |
FI (1) | FI861779A (fi) |
GB (1) | GB2177279A (fi) |
NL (1) | NL8520301A (fi) |
NO (1) | NO861495L (fi) |
SE (1) | SE444880B (fi) |
WO (1) | WO1986001960A1 (fi) |
Cited By (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4881252A (en) * | 1987-06-16 | 1989-11-14 | Tunstall Telecom Limited | Sheltered housing scheme communications system |
US5210784A (en) * | 1991-06-28 | 1993-05-11 | Lifeline Systems, Inc. | Adaptive speakerphone system |
US5249223A (en) * | 1991-01-03 | 1993-09-28 | At&T Bell Laboratories | Call-load-control arrangement for an emergency-call-answering center |
US5379337A (en) * | 1991-08-16 | 1995-01-03 | U S West Advanced Technologies, Inc. | Method and system for providing emergency call service |
US5457731A (en) * | 1993-10-04 | 1995-10-10 | Witherspoon; Joe H. | Emergency telecommunications device for the disabled |
US6067356A (en) * | 1997-09-20 | 2000-05-23 | Alcatel | Method of routing emergency calls |
US20060159074A1 (en) * | 2005-01-18 | 2006-07-20 | Biotronik Crm Patent Ag | Patient device |
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH0714230B2 (ja) * | 1988-05-19 | 1995-02-15 | 富士通株式会社 | 着信呼の分配制御方式 |
CA2102865C (en) * | 1992-11-11 | 1999-02-16 | Robert J. Mulrow | Internode routing for a telephone system |
AUPR056200A0 (en) | 2000-10-03 | 2000-10-26 | Telemedia Group Pty Ltd | Communication arrangement |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3700813A (en) * | 1966-10-18 | 1972-10-24 | Gen Alarm Corp | Telephoning system |
US3867581A (en) * | 1972-12-29 | 1975-02-18 | Stromberg Carlson Corp | Universal night service circuit |
US4028499A (en) * | 1975-11-28 | 1977-06-07 | Rca Corporation | Universal/assigned night answering system for EPABX |
US4064368A (en) * | 1976-06-07 | 1977-12-20 | Lifeline Systems, Inc. | Closed-loop emergency alarm and response system |
Family Cites Families (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
SE416593B (sv) * | 1978-02-10 | 1981-01-19 | Ericsson Telefon Ab L M | Larmsystem innefattande ett antal abonnentapparater |
-
1984
- 1984-09-17 SE SE8404667A patent/SE444880B/sv not_active IP Right Cessation
-
1985
- 1985-09-17 GB GB08612119A patent/GB2177279A/en not_active Withdrawn
- 1985-09-17 DE DE19853590468 patent/DE3590468T1/de not_active Withdrawn
- 1985-09-17 WO PCT/SE1985/000353 patent/WO1986001960A1/en active Application Filing
- 1985-09-17 AU AU48644/85A patent/AU4864485A/en not_active Abandoned
- 1985-09-17 US US06/857,746 patent/US4689811A/en not_active Expired - Fee Related
- 1985-09-17 NL NL8520301A patent/NL8520301A/nl unknown
-
1986
- 1986-04-16 NO NO861495A patent/NO861495L/no unknown
- 1986-04-28 FI FI861779A patent/FI861779A/fi not_active Application Discontinuation
- 1986-05-16 DK DK229286A patent/DK229286D0/da not_active Application Discontinuation
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3700813A (en) * | 1966-10-18 | 1972-10-24 | Gen Alarm Corp | Telephoning system |
US3867581A (en) * | 1972-12-29 | 1975-02-18 | Stromberg Carlson Corp | Universal night service circuit |
US4028499A (en) * | 1975-11-28 | 1977-06-07 | Rca Corporation | Universal/assigned night answering system for EPABX |
US4064368A (en) * | 1976-06-07 | 1977-12-20 | Lifeline Systems, Inc. | Closed-loop emergency alarm and response system |
Cited By (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4881252A (en) * | 1987-06-16 | 1989-11-14 | Tunstall Telecom Limited | Sheltered housing scheme communications system |
US5249223A (en) * | 1991-01-03 | 1993-09-28 | At&T Bell Laboratories | Call-load-control arrangement for an emergency-call-answering center |
US5210784A (en) * | 1991-06-28 | 1993-05-11 | Lifeline Systems, Inc. | Adaptive speakerphone system |
US5333171A (en) * | 1991-06-28 | 1994-07-26 | Lifeline Systems, Inc. | Adaptive speakerphone system |
US5379337A (en) * | 1991-08-16 | 1995-01-03 | U S West Advanced Technologies, Inc. | Method and system for providing emergency call service |
US5457731A (en) * | 1993-10-04 | 1995-10-10 | Witherspoon; Joe H. | Emergency telecommunications device for the disabled |
US6067356A (en) * | 1997-09-20 | 2000-05-23 | Alcatel | Method of routing emergency calls |
US20060159074A1 (en) * | 2005-01-18 | 2006-07-20 | Biotronik Crm Patent Ag | Patient device |
US7865242B2 (en) * | 2005-01-18 | 2011-01-04 | Biotronik Crm Patent Ag | Patient device |
Also Published As
Publication number | Publication date |
---|---|
FI861779A0 (fi) | 1986-04-28 |
GB2177279A (en) | 1987-01-14 |
GB8612119D0 (en) | 1986-06-25 |
SE444880B (sv) | 1986-05-12 |
SE8404667D0 (sv) | 1984-09-17 |
DE3590468T1 (de) | 1986-08-28 |
WO1986001960A1 (en) | 1986-03-27 |
DK229286A (da) | 1986-05-16 |
AU4864485A (en) | 1986-04-08 |
DK229286D0 (da) | 1986-05-16 |
NL8520301A (nl) | 1986-07-01 |
SE8404667L (sv) | 1986-03-18 |
FI861779A (fi) | 1986-04-28 |
NO861495L (no) | 1986-04-16 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
AS | Assignment |
Owner name: TELEFONAKTIEBOLAGET L M ERICSSON, S-126 25 STOCKHO Free format text: ASSIGNMENT OF ASSIGNORS INTEREST.;ASSIGNORS:LENNSTROM, CARL A.;CLAESON, MATS I.;REEL/FRAME:004547/0829 Effective date: 19860301 Owner name: TELEFONAKTIEBOLAGET L M ERICSSON, SWEDEN Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNORS:LENNSTROM, CARL A.;CLAESON, MATS I.;REEL/FRAME:004547/0829 Effective date: 19860301 |
|
REMI | Maintenance fee reminder mailed | ||
LAPS | Lapse for failure to pay maintenance fees | ||
STCH | Information on status: patent discontinuation |
Free format text: PATENT EXPIRED DUE TO NONPAYMENT OF MAINTENANCE FEES UNDER 37 CFR 1.362 |
|
FP | Lapsed due to failure to pay maintenance fee |
Effective date: 19910825 |